Installation
February 2011 2-8 P/N 06-237041-001
2-4.3 Installing A Power Supply Unit into The Enclosure Top Tier
Note: The top tier of the enclosure has been designed to accommodate two power supply units and
a Power Management Unit (PMU) Board. Power supply units and PMU Board must be
installed first, followed by the Main Controller Board and Keypad/Display which fits over
these components.
To install a power supply unit into the top tier of an enclosure:
1. Make sure the control unit location is dry and that the enclosure is free of construction dust and
metal shavings prior to installing the power supply.
2. Remove the power supply unit from its packaging.
3. Orient the power supply unit such that its wire harness is located at the bottom.
4. Ensure that the power supply unit AC-input-voltage selector switch is set to the proper position
for either 115 Vac or 230 Vac. See Figure 2-4 below.
Figure 2-4. Power Supply Unit
5. Locate the side mounting screw which is in place on the side of the power supply unit. Refer to
Figure 2-4 above for location of hole. Back out the screw by approximately 1/8-inch.
6. Locate the two power supply unit retention tabs in the cabinet and side fastening tab in the
enclosure’s back panel.
7. With the wire harness down, slide the power supply unit onto the two retention tabs, aligning the side
mounting screw with the fastening tab at the same time.
Note: It is recommended that the leftmost Power Supply Unit slot be occupied first in order to
access to the side fastening tab.
8. Slide the side mounting screw into the slot of the fastening tab.
9. Tighten the side mounting screw onto the fastening tab to secure the power supply unit in place.
Note: If an additional power supply unit has been purchased, repeat this procedure to install that
power supply next to the one just installed.
CAUTION
Use a ground strap to prevent static discharge that could damage the power supply.
115 V
230 V
Side Mounting
Screw
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